Yes it did occasionally get sluggish but I never felt compelled to shut down and restart.
Lightroom 4 did run okay during this time. Out of 4GB of RAM installed, just 500MB were free, but the real sign of insufficient RAM is the whopping 4.77 GB of page outs. Over the course of a day and a half, I ran Lightroom 4 along side Photoshop, Safari, Mail, and iTunes. After a half hour of running Lightroom 4 and iTunes, 1GB of RAM was available, plus there was already 179 MB of page outs. Let’s look at Lightroom 4 with 4GB of RAM installed on a 2012 MacBook Pro core i7 2.3ghz. Page out were minimized only when there was plenty of free (green) RAM. In my case, I also observed that page outs would occur even if there was inactive (blue) RAM which should be free to use. There was often page outs whenever my Mac would get sluggish or show the dreaded spinning beach ball of death. Page outs happen when RAM is not available, and so the operating system chooses to write information to the hard drive. One thing I learned from observing Activity Monitor is how much page outs reflected my Mac’s performance. In brief, red and yellow is bad, but green and blue are good. The pie chart represents the computers total RAM, red and yellow is used and unavailable, respectively.
You can read about Activity Monitor on Apple’s website, but I’ll give a quick synopsis.
#ADOBE LIGHTROOM 4 FOR MAC OSX MAC OSX#
Using Activity Monitor on Mac OSX and running Lightroom 4, I monitored how much RAM was free or used. I’ll cut straight to the chase, Adobe Lightroom 4 will use all available memory in a MacBook Pro, although how much you need depends on your workflow.
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